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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4905
Location: Barcelona
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Posted: Apr 18, 2011 11:26 Post subject: A mineralogical trip through the states of USA - New York |
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New York the "Empire State"
To lead the New York State I'm pleased to publish one of the multiple images downloaded by Glenn Rhein in the amazing thread: "New find of minerals from New York" about the recent discovery of a lot of minerals in his property.
Thank you Glenn!
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Meionite with minor Titanite Rhein property, Amity, Town of Warwick, Orange County, New York, USA Specimen size: 24 x 35 cm. Main crystal size: about 4 cm. Photo: Glenn Rhein |
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John Jaszczak
Joined: 05 Oct 2010
Posts: 300
Location: Hancock, MI
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Posted: Apr 18, 2011 12:14 Post subject: Re: A mineralogical trip through the states of USA - New York |
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One of the most interesting occurrences for graphite crystals in new York is the Gouverneur Talc Company #4 quarry (Valentine property) in Harrisville, NY. The marble there hosts a wide variety of graphite morphologies ranging from well-formed tabular hexagonal crystals to spherical aggregates. One particular piece of calcite showed graphite crystals that showed late-stage layer-by-layer growth of graphite (note the growth spirals) overgrowing earlier-formed graphite crystals from the edges toward the center (a,b). The earlier-formed crystals often have a frosty luster (a) but occasionally showed remarkable stellate dendrites (snowflake) patterns on the surface (b-c). Image (d) is of the same crystal as (c) using Nomarski differential interference contrast microscopy. John A. Jaszczak specimens and photos (345-3-4, 345-02, 345-05, 346-04).
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Graphite with spiral and stellar overgrowths. Gouverneur Talc Company #4 quarry, Harrisville, NY. |
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rweaver
Joined: 13 Apr 2009
Posts: 259
Location: Ridgecrest, California
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Posted: Apr 18, 2011 19:20 Post subject: Re: A mineralogical trip through the states of USA - New York |
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Former collection of Carnegie Inst. and Del Oswald
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Fluorite Lockport, New York 7.0cm x 5.8cm |
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rweaver
Joined: 13 Apr 2009
Posts: 259
Location: Ridgecrest, California
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Posted: Apr 18, 2011 19:24 Post subject: Re: A mineralogical trip through the states of USA - New York |
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A very large undamage one on matrix
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Quartz var Herkimer Diamond Middleville, New York 7.0cm x 6.7cm |
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John S. White
Site Admin
Joined: 04 Sep 2006
Posts: 1295
Location: Stewartstown, Pennsylvania, USA
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Posted: Apr 19, 2011 04:48 Post subject: Re: A mineralogical trip through the states of USA - New York |
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Here is a cute little quartz scepter from Treasure Mtn., Fall Hill, Little Falls, NY.
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_________________ John S. White
aka Rondinaire |
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Doug
Joined: 23 Mar 2008
Posts: 150
Location: Port Orchard, Washington
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Posted: Apr 19, 2011 14:09 Post subject: Re: A mineralogical trip through the states of USA - New York |
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The green fluorite is unlike any I ever ran across collecting in Lockport. I grew up in western New York, Hamburg which is south of Lockport, and did a fair amount of collecting at what was then called the Frontier Dolomite Products Quarry. All I ever saw was colorless simple cubes as shown in this photo.
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Fluorite from Frontier Quarry, Lockport, Niagara County, New York. Specimen width 8 cm, crystals to 1.5 cm. |
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_________________ Micro minerals - the hidden beauty of the mineral world |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2061
Location: USA
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Posted: Apr 21, 2011 07:10 Post subject: Re: A mineralogical trip through the states of USA - New York |
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A couple for New York.
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Smoky Quartz var Herkimer Diamond Ace of Diamonds Mine, Herkimer Co., New York Specimen size 8 x 5.3 cm. |
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Quartz var Herkimer Diamond Treasure Mountain Diamond Mine, Herkimer Co., New York Specimen size 2.8 x 1 cm. |
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Quartz Dodge Mine, St. Lawrence Co., New York Specimen size 4.5 x 2.5 x 2.1 cm. |
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Jesse Fisher
Joined: 18 Mar 2009
Posts: 629
Location: San Francisco
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Posted: Apr 21, 2011 09:29 Post subject: Re: A mineralogical trip through the states of USA - New York |
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Fluorite on Dolomite from the Emmons Quarry, Walworth, New York.
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Fluorite (1.5 cm on edge) on Dolomite, Emmons Quarry, Walworth, New York. |
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Jim Prentiss
Joined: 01 Dec 2009
Posts: 103
Location: Ohio
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Posted: Apr 21, 2011 12:44 Post subject: Re: A mineralogical trip through the states of USA - New York |
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Hello Everyone,
I have but one mineral from New York to post today.
jimp
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This dark green Diopside is from the Mulvaney Property, Pitcarin, Saint Lawrence County, New York and measures 5/8" x 3/16" (1.59 cm x 0.48 cm) |
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alfredo
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Joined: 30 Jan 2008
Posts: 981
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Posted: Apr 21, 2011 12:59 Post subject: Re: A mineralogical trip through the states of USA - New York |
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In case anyone mistakenly thought that New York only has pretty minerals, here is a rare amphibole, fluoropotassichastingsite, from its type locality, the Greenwood mine. I love black minerals with long names.
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Fluoropotassichastingsite, 1cm cleavage. |
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Luiz Menezes
Joined: 10 Dec 2009
Posts: 140
Location: Belo Horizonte
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Posted: Apr 21, 2011 14:53 Post subject: Re: A mineralogical trip through the states of USA - New York |
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John:
What is the size of the graphite crystals?
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John Jaszczak
Joined: 05 Oct 2010
Posts: 300
Location: Hancock, MI
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Posted: Apr 26, 2011 13:14 Post subject: Re: A mineralogical trip through the states of USA - New York |
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Dear Luiz-
Sorry that I didn' t put a size. I am embarrassed that I also failed to include the size in the Rocks & Minerals article about them (R&M 84 (2009) 502-519). They crystals are between 1 and 2 mm across.
Thanks!
John
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John Jaszczak
Joined: 05 Oct 2010
Posts: 300
Location: Hancock, MI
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Posted: Apr 26, 2011 13:19 Post subject: Re: A mineralogical trip through the states of USA - New York |
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In addition to well-formed hexagonal single crystals, graphite occurs in spherical aggregates of platy crystals that can be fairly coarse, or very compact. The compact versions probably grow by a different crystal-growth mechanism. Here are examples of each.
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Coarse spherical aggregate of graphite crystals partially dissolved from enclosing calcite matrix, with associated unidentified silicates. (1.2-mm diameter) |
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Compact spherical aggregate of graphite crystals partially dissolved from enclosing calcite matrix. (1-mm diameter) |
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Susan Robinson
Joined: 05 Aug 2010
Posts: 163
Location: Hancock, MI
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Posted: Apr 27, 2011 11:02 Post subject: Re: A mineralogical trip through the states of USA - New York |
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The green fluorite is most likely from either Macomb, New York, or Muskellonge Lake, New York, and not Lockport, NY. My husband and I lived in that region for many years and he collected from the Macomb locality several times when it was accessible.
I hope this information is helpful for you.
Susan Robinson
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am mizunaka
Joined: 09 Apr 2010
Posts: 2061
Location: USA
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Posted: Oct 01, 2011 02:04 Post subject: Re: A mineralogical trip through the states of USA - New York |
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My "duck" head quartz specimen. The calcite has unknown inclusions that might be marcasite.
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Smoky Quartz w/Calcite Lowville Formation, Black River Group, Lowville NY 4 x 3 cm |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2061
Location: USA
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Posted: Oct 16, 2011 15:36 Post subject: Re: A mineralogical trip through the states of USA - New York |
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Calcite included with needles of marcasite.
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Calcite with Dolomite Benchmark Quarry, St Johnsville, Montgomery Co., New York 4.5 x 5 cm |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4905
Location: Barcelona
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Posted: Jul 08, 2012 14:24 Post subject: Re: A mineralogical trip through the states of USA - New York |
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A new addition
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Uvite Pierrepont, St. Lawrence County, New York, USA Specimen size: 3.8 × 3.5 × 3.2 cm. Mined about 1959 Former collection of Folch duplicates Photo: Reference Specimens |
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NYFineMineralExchange
Joined: 20 Jul 2012
Posts: 12
Location: Little Falls, NY
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Posted: Jul 21, 2012 22:00 Post subject: Re: A mineralogical trip through the states of USA - New York |
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Herkimer Diamonds with Metal inclusions such as Marcasite and Pyrite are very rare. Amongst these crystals it is even rarer to find Pyrite and the Rarest to find Fully Formed Pyrite Cubes. These almost never occur, and even if you know where to look you can go years without finding one, Marcasite, while still rare is more common.
This specimen features Fully Formed, Bright Gold Pyrite Cubes, completely encased within a floater of radiant gem quality, Herkimer Quartz, This makes for quite the combination aesthetically.
You can gaze into this HUGE gem for hours and never see it all. Its likes its own universe inside thishuge jewek. The quartz is RADIANT and FLAWLESS so you can really see this intricate details of this Marcasite/Pyrite City! Not a fracture to throw it off. The Quartz preserved this delicate metal for 500 million years and now we can still gaze at it in its origional splendor.
In addition to all the goodness mentioned there are also two Calcite crystals on this specimen, which make it even more rare and "collectable". One of these crystals is actually BELOW the surface of the Quartz due to a divet created by the marcasite!!!
There is a geologialy important moment, crystalized. I envision this GEM forming in a split second, the Pyrite Cubes seem to be "birthing" and crystaling as they emerge from the marcasite. Somehow this occurance was encased with the Herkimer Quartz.
A truely Unique and breathtaking specimen from good ol' NY state :)
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Quartz (Herkimer) with Marcasite and Pyrite Cube Inclusions / Calcite St. Johnsville, Montgomery County, New York, USA 41x31x24 in mm 126 Carats Once in a Lifetime Crystal!! |
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NYFineMineralExchange
Joined: 20 Jul 2012
Posts: 12
Location: Little Falls, NY
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Posted: Jul 21, 2012 22:12 Post subject: Re: A mineralogical trip through the states of USA - New York |
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Classic American Locality - Not much available from this location. I had to hunt this one down and harvest it from the Earth myself in order to get a good specimen from Kingston, NY :) Well worth the effort as I hit a good sized pocket while there, now I can share and help fill gaps in other collections.
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Quartz / Calcite on Matrix Kingston (Old Quarry along the Hudson), New York, USA 58x47x17 mm. Pristine Specimen / No Damage |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4112
Location: Germany
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Posted: Jul 22, 2012 02:50 Post subject: Re: A mineralogical trip through the states of USA - New York |
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A classic quartz from NY:
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Quartz Crystal Grove Diamond Mine, St Johnsville, Montgomery County, New York, USA Specimen width 50 mm |
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